On July 5th, 1984, a man vanished in Kansas City. Four years later, police would uncover one of the most bizarre cases in American history.

This episode of Unmarked investigates the crimes of “Bizarre” Bob Berdella, City’s first documented serial killer—using never-before-heard material, recovered police files, and an AI restoration of Berdella’s sealed confession.

For decades, the confession was believed lost. The tapes were ordered destroyed. The documents were sealed. And the case slipped out of the headlines after a massive explosion reshaped the city’s priorities.

But today, for the first time, we tell the full story—from the 911 call that exposed Berdella to the detectives who sat in the room for his three-day confession.

Featuring interviews with investigators, archival reporting, original documents, and restored audio based on the only surviving descriptions of the confession, this is the most complete account of the Berdella case ever told.

James Buddy Day is an award-winning true crime filmmaker known for directing and producing some of the most watched and most discussed crime documentaries today. His work covers infamous serial killers, cold cases, cults, missing persons, and some of the biggest true-crime stories of the last decade.

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